<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>添加商品</el-breadcrumb-item>
        </el-breadcrumb>
        <el-card class="box-card">
            <!-- 警告区域 -->
            <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>
            <!-- 步骤条区域 -->
            <el-steps :active="activeIndex - 0" finish-status="success" align-center>
                <el-step title="基本信息"></el-step>
                <el-step title="商品参数"></el-step>
                <el-step title="商品属性"></el-step>
                <el-step title="商品图片"></el-step>
                <el-step title="商品内容"></el-step>
                <el-step title="完成"></el-step>
            </el-steps>
            <!-- 标签页区域 -->
            <el-form :model="addForm" :rules="addRules" ref="addRuleFormRef" label-width="100px" label-position="top">
                <el-tabs tab-position="left" v-model="activeIndex" @tab-click="tabClicked" :before-leave="tabTaggetLeave">
                    <el-tab-pane label="基本信息" name="0">
                        <el-form-item label="商品名称" prop="goods_name">
                            <el-input v-model="addForm.goods_name"></el-input>
                        </el-form-item>
                        <el-form-item label="商品价格" prop="goods_price">
                            <el-input v-model="addForm.goods_price" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品重量" prop="goods_weight">
                            <el-input v-model="addForm.goods_weight" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品数量" prop="goods_number">
                            <el-input v-model="addForm.goods_number" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品分类" prop="goods_cat">
                            <el-cascader
                            v-model="addForm.goods_cat"
                            :options="cateList"
                            :props="cascaderProp"
                            @change="handleChange"
                            clearable>
                            </el-cascader>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品参数" name="1">
                        <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
                            <el-checkbox-group v-model="item.attr_vals" size="mini">
                                <el-checkbox :label="item1"  v-for="(item1,index1) in item.attr_vals" :key="index1" border></el-checkbox>
                            </el-checkbox-group>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品属性" name="2">
                        <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
                            <el-input v-model="item.attr_vals"></el-input>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品图片" name="3">
                        <el-upload
                        :action="uploadURL"
                        :on-preview="handlePreview"
                        :on-remove="handleRemove"
                        list-type="picture"
                        :headers="headerToken"
                        :on-success='uploadSuccess'>
                        <el-button size="small" type="primary">点击上传</el-button>
                        </el-upload>
                    </el-tab-pane>
                    <el-tab-pane label="商品内容" name="4">
                        <quill-editor v-model="addForm.goods_introduce"></quill-editor>   
                        <el-button type="primary" @click="addGoods">添加商品</el-button>
                         
                    </el-tab-pane>
                </el-tabs>
            </el-form>
         </el-card>
        <el-dialog
            title="图片预览"
            :visible.sync="imgDialogVisible"
            width="50%">
            <img :src="imgPath" alt="">
        </el-dialog>
    </div>
</template>

<script>
import _ from 'lodash'

export default {
    data() {
        return {
            activeIndex:'0',
            addForm:{
                goods_name:'',
                goods_price:null,
                goods_weight:null,
                goods_number:null,
                goods_cat:[],
                pics:[],
                goods_introduce:'',
                attrs:[]
            },
            addRules:{
                goods_name:[
                    { required: true, message: '请输入商品名称', trigger: 'blur' }
                ],
                goods_price:[
                    { required: true, message: '请输入商品价格', trigger: 'blur' }
                ],
                goods_weight:[
                    { required: true, message: '请输入商品重量', trigger: 'blur' }
                ],
                goods_number:[
                    { required: true, message: '请输入商品数量', trigger: 'blur' }
                ],
                goods_cat:[
                    { required: true, message: '请选择商品分类', trigger: 'blur' }
                ]
            },
            cascaderProp:{
                value: 'cat_id',
                label: 'cat_name',
                children: 'children',
                expandTrigger: 'hover' 
            },
            cateList:[],
            manyTableData:[],
            onlyTableData:[],
            uploadURL:'http://127.0.0.1:8888/api/private/v1/upload',
            headerToken:{
                Authorization:window.sessionStorage.getItem('token')
            },
            imgDialogVisible:false,
            imgPath:''
        }
    },
    created() {
        this.getAllCateList()
    },
    methods: {
        handleChange(){
            if(this.addForm.goods_cat.length !== 3){
                return this.addForm.goods_cat = []
            }
        },
        async getAllCateList(){
           const {data:res} = await this.$http.get('categories')
           if (res.meta.status !== 200) {
              return this.$message.error('商品分类获取失败！')
           }
           this.cateList = res.data
        },
        async tabClicked(){
            if (this.activeIndex == 1) {
                const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:'many'}})
                if(res.meta.status !== 200){
                    this.$message({
                        message: '获取参数失败',
                        type: 'error'
                    });
                }
                res.data.forEach(item => {
                    item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
                });
                this.manyTableData = res.data
            }else if(this.activeIndex == 2){
                const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:'only'}})
                if(res.meta.status !== 200){
                    this.$message({
                        message: '获取参数失败',
                        type: 'error'
                    });
                }
                this.onlyTableData = res.data
                console.log(this.onlyTableData);
                
            }
        },
        tabTaggetLeave(activeName, oldActiveName){
            if (this.addForm.goods_cat.length != 3) {
                this.$message({
                        message: '请选择商品分类',
                        type: 'error'
                    });
                return false
            }
        },
        handlePreview(file){
            console.log(file);
            this.imgPath = file.response.data.url
            this.imgDialogVisible = true
        },
        handleRemove(file){
            const filePath = file.response.data.tmp_path
            const i = this.addForm.pics.findIndex(item => item.pic === filePath)
            this.addForm.pics.splice(i,1)
            console.log(this.addForm.pics);         
        },
        uploadSuccess(response){
            if (response.meta.status === 200) {
                this.addForm.pics.push({pic:response.data.tmp_path})
            console.log(this.addForm.pics);
            }
        },
        addGoods(){
            this.$refs.addRuleFormRef.validate(async valid => {
                if(!valid) return this.$message.error('请填写必要的参数')
                const form =_.cloneDeep(this.addForm)
                form.goods_cat = this.addForm.goods_cat.join(',')
                this.manyTableData.forEach(item => {
                   const newInfo = {
                       attr_id:item.attr_id,
                       attr_value:item.attr_vals.join(' ')
                   }
                   form.attrs.push(newInfo)
                })
                 this.onlyTableData.forEach(item => {
                   const newInfo = {
                       attr_id:item.attr_id,
                       attr_value:item.attr_vals
                   }
                   form.attrs.push(newInfo)
                })
                const {data:res} = await this.$http.post('goods',form)
                if (res.meta.status !== 201) {
                    return this.$message.error(res.meta.msg)
                }
                this.$message({
                        message: '添加商品成功',
                        type: 'success'
                    });
                this.$router.push('/goods')
            })
        }
    },
    computed: {
        cateId(){
            if(this.addForm.goods_cat.length == 3){
                return this.addForm.goods_cat[2]
            }
        }
    },
}
</script>

<style lang="less" scoped>
.el-checkbox{
    margin: 0 8px 0 0 !important;
}

</style>